Two things stand out about the sneakers pictured above in a screenshot from Twitter. First, their list price is a cool $170 million (though we imagine that’s a glitch).

Second, there’s a “Buy now” button included in the tweet.

What’s that you say? You didn’t know you could buy stuff directly from a tweet? Neither did we. So what do we have here?

The products being shared in these tweets come from a shopping app called Fancy. Back in January, Re/codeuncovered a mock-up online that was created by Fancy and that a source said was used to pitch Twitter on what a Twitter e-commerce integration could look like. But Twitter didn’t launch any buying capability within tweets, until maybe now.

When Re/code uncovered these “Buy now” buttons today, they only surfaced in Twitter’s mobile app and tapping on them didn’t do anything. But Re/code did speak to someone who said that tapping on the button earlier on Monday did lead to a checkout page opening up within the Twitter app. Re/code could not replicate that experience.

So did Fancy accidentally make public another Twitter Commerce experiment? Is Twitter starting to facilitate in-tweet purchases?

That said, it would be difficult, if not impossible, for Fancy to include “Buy now” buttons in a tweet without Twitter’s approval. So it’s likely that in-tweet shopping is here, or coming soon.

As former Re/code reporter (and now sworn enemy) Mike Isaac and I reported at the time of the first Twitter Commerce mock-up discovery, the launch would be a long time coming:

The new product comes after a long history of Twitter virtually neglecting commerce options on its service (aside from a few exceptions which weren’t widely adopted by the public). Twitter has also built and shelved multiple commerce-related products in the past, according to two people familiar with the matter.

But the renewed interest in Commerce comes on the heels of a closely watched initial public offering, where questions were raised about Twitter’s ability to add revenue streams in the future. Shortly before the company went public, Twitter hired ex-Ticketmaster CEO Nathan Hubbard to run the company’s commerce efforts.

In May, Twitter announced a deal with Amazon that lets Amazon shoppers add a product to their online shopping cart via a tweet. But again, the integration did not allow a Twitter user to pay for a product directly from the tweet.